小米研发人员达22641人创历史新高，单季投入78亿元

Group 1 - The core point of the article is that Xiaomi has significantly increased its research and development (R&D) efforts, achieving a record number of R&D personnel and investment [1] - Xiaomi's R&D personnel count has reached 22,641, marking a historical high for the company [1] - The company reported a quarterly R&D investment of 7.8 billion yuan, which represents a year-on-year increase of 41.2% [1]